Merge bitcoin#14036: travis: Run unit tests --with-sanitizers=undefined

fad8afa travis: Run unit tests --with-sanitizers=undefined (MarcoFalke)
0d00fd5 depends: allow CC/CXX to be overridden during configure (Cory Fields)

Pull request description:

  See issue bitcoin#12691

Tree-SHA512: 0772e8e037411cb4664270945a0fc9c0c1ed24eeaf5308460baee707868f7b700d8e740a6babb1d02bc818a8a4b71d9e33601ab2cc850ff315755fcf3d79d29e

# Conflicts:
#	.travis.yml

Author: laanwj

ci/matrix.sh

@@ -31,64 +31,59 @@ export GOAL="install"
 export SDK_URL=${SDK_URL:-https://bitcoincore.org/depends-sources/sdks}
 export MAKEJOBS="-j4"
 
-export RUN_UNITTESTS=false
-export RUN_INTEGRATIONTESTS=false
+export RUN_UNITTESTS=true
+export RUN_INTEGRATIONTESTS=true
 
 if [ "$BUILD_TARGET" = "arm-linux" ]; then
   export HOST=arm-linux-gnueabihf
   export CHECK_DOC=1
   # -Wno-psabi is to disable ABI warnings: "note: parameter passing for argument of type ... changed in GCC 7.1"
   # This could be removed once the ABI change warning does not show up by default
   export BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports CXXFLAGS=-Wno-psabi"
+  export RUN_UNITTESTS=false
+  export RUN_INTEGRATIONTESTS=false
 elif [ "$BUILD_TARGET" = "win32" ]; then
   export HOST=i686-w64-mingw32
   export DPKG_ADD_ARCH="i386"
   export BITCOIN_CONFIG="--enable-gui --enable-reduce-exports --disable-miner"
   export DIRECT_WINE_EXEC_TESTS=true
-  export RUN_UNITTESTS=true
 elif [ "$BUILD_TARGET" = "win64" ]; then
   export HOST=x86_64-w64-mingw32
   export DPKG_ADD_ARCH="i386"
   export BITCOIN_CONFIG="--enable-gui --enable-reduce-exports --disable-miner"
   export DIRECT_WINE_EXEC_TESTS=true
-  export RUN_UNITTESTS=true
 elif [ "$BUILD_TARGET" = "linux32" ]; then
   export HOST=i686-pc-linux-gnu
   export BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports --enable-crash-hooks LDFLAGS=-static-libstdc++"
   export USE_SHELL="/bin/dash"
   export PYZMQ=true
-  export RUN_UNITTESTS=true
-  export RUN_INTEGRATIONTESTS=true
 elif [ "$BUILD_TARGET" = "linux64" ]; then
   export HOST=x86_64-unknown-linux-gnu
   export DEP_OPTS="NO_UPNP=1 DEBUG=1"
   export BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports --enable-crash-hooks"
   export CPPFLAGS="-DDEBUG_LOCKORDER -DENABLE_DASH_DEBUG -DARENA_DEBUG"
   export PYZMQ=true
-  export RUN_UNITTESTS=true
-  export RUN_INTEGRATIONTESTS=true
 elif [ "$BUILD_TARGET" = "linux64_cxx17" ]; then
   export HOST=x86_64-unknown-linux-gnu
   export DEP_OPTS="NO_UPNP=1 DEBUG=1"
-  export BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports --enable-crash-hooks --enable-c++17"
+  export BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports --enable-crash-hooks --enable-c++17 --with-sanitizers=undefined"
   export CPPFLAGS="-DDEBUG_LOCKORDER -DENABLE_DASH_DEBUG -DARENA_DEBUG"
   export PYZMQ=true
-  export RUN_UNITTESTS=true
-  export RUN_INTEGRATIONTESTS=true
+  export RUN_INTEGRATIONTESTS=false
 elif [ "$BUILD_TARGET" = "linux64_nowallet" ]; then
   export HOST=x86_64-unknown-linux-gnu
   export DEP_OPTS="NO_WALLET=1"
   export BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
-  export RUN_UNITTESTS=true
 elif [ "$BUILD_TARGET" = "linux64_release" ]; then
   export HOST=x86_64-unknown-linux-gnu
   export DEP_OPTS="NO_UPNP=1"
   export BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports"
   export PYZMQ=true
-  export RUN_UNITTESTS=true
 elif [ "$BUILD_TARGET" = "mac" ]; then
   export HOST=x86_64-apple-darwin14
   export BITCOIN_CONFIG="--enable-gui --enable-reduce-exports --disable-miner"
   export OSX_SDK=10.11
   export GOAL="all deploy"
+  export RUN_UNITTESTS=false
+  export RUN_INTEGRATIONTESTS=false
 fi

depends/config.site.in

@@ -55,9 +55,12 @@ export PKG_CONFIG_PATH=$depends_prefix/share/pkgconfig
 CPPFLAGS="-I$depends_prefix/include/ $CPPFLAGS"
 LDFLAGS="-L$depends_prefix/lib $LDFLAGS"
 
-CC="@CC@"
-CXX="@CXX@"
-OBJC="${CC}"
+if test -n "@CC@" -a -z "${CC}"; then
+  CC="@CC@"
+fi
+if test -n "@CXX@" -a -z "${CXX}"; then
+  CXX="@CXX@"
+fi
 PYTHONPATH=$depends_prefix/native/lib/python/dist-packages:$PYTHONPATH
 
 if test -n "@AR@"; then